Are the two stationary gray objects on the left hand side of the screen the solar panels? Are they wired up to the locked door? (Which I have tentatively identified as the bit in the center square at the bottom of the screen.) How long must a movable metal object bathe a square away from adjacent to the most-bright square in the game (which I assume is the solar light) before it has enough energy to transfer anything/enough to the solar panels? No action I take seems to appreciably impact the game state (except by making the movable metal objects no longer freely movable). If the idea is that each of the metal objects must sunbathe for some significant amount of time in real time (more than a minute, for sure) before it can transfer energy to the solar panels, then there ought to be some kind of visual feedback so we know what progress it's made and how much it has left to go...
Solar panels are on the left and embeded to the wall, yes. THey are wired to the door, yes. door is at the bottom, yes.
The change is imminent, so you don't need to wait for boxes to heat up. They will start emitting themselves as soon as they are sunbathed. The panels are activated as long as they are sunbathed by enough amount of energy as well.
I will make the intensity of the light stronger so it will be more obvious that they are heating up. I might better upload one of the solutions, coming in a min.
Ah, I see now--I was interpreting the goal as "place the objects near the sunlight so they can heat up, *then* place them near the solar panels so that the (stored) energy can transfer" rather than "place the objects where they can continuously and simultaneously heat up and transfer energy to the solar panels". That makes a lot more sense!